Glasgow Weather in September
During September, Glasgow experiences moderate daytime temperatures of 17°C (63°F) and cooler nights around 9°C (48°F). Expect quite a bit of rainfall. Around 103 mm (4.1 in) is typical.
Rainfall in Glasgow in September
Historically, approximately 20 days this month are expected to have rain, averaging 103 mm (4.1 in). Wet weather is a regular and significant part of this month. Frequent days of rain combined with high totals means proper waterproofs are worth packing.
Temperature in Glasgow in September
Glasgow in September gets highs of 17°C (63°F) during the day and drops to 9°C (48°F) at night. Even when the weather is stable, mornings and evenings can still feel distinctly cool. At 9°C (48°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.
Sunshine in Glasgow in September
The month experiences a moderate amount of sunlight, with 117 hours of sunshine. This provides a nice balance between sunshine and clouds.Should you favor a climate that's both dry and comfortably warm, June typically offers the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Scotland, check out our Glasgow's climate page.
Glasgow Temperature in September
Min Temperature
9°C (48°F)
Max Temperature
17°C (63°F)
Chance of Rain
67%
Precipitation
103 mm (4.1 in)
Rainy days
20 days
Humidity
79%
Sunshine
117 hours
Percentage Sunshine
29%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Glasgow typically stay consistent throughout September, with daily highs averaging around 17°C (63°F). Nights are cool, with lows typically ranging from 8°C (46°F) to 10°C (50°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Glasgow in September
Browse day-by-day weather records for Glasgow spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Glasgow historical weather extremes in September
The extremes listed below come from historical weather data collected in Glasgow from 1976 through 2025.
- The warmest day in September was on September 8, 2023, with a maximum of 28°C (82°F).
- The lowest daytime temperature in September was 9°C (48°F), recorded on September 21, 1985.
- The coldest night in September in Glasgow was on September 27, 2020, with a minimum of -3°C (27°F).
Best Places in Scotland in September
Find out more about the weather in Scotland and which places have the best travel conditions in this month. See all of Scotland in September →
perfect weather
pleasant
tolerable
unpleasant
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What to Wear in Glasgow in September
Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Glasgow in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Scotland, check out our Glasgow's climate page.
Temperature Rainfall Sunshine Humidity
See the full Glasgow climate overview or explore weather in Scotland.
